Physics
JAMB 1992
Which of the following apparatus will require the smallest fuse rating for its protection?
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A.
60W, 240V
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B.
60W, 40V
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C.
40W, 12V
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D.
40W, 5V
Correct Answer: Option A
Explanation
I = \(\frac{P}{V}\) = \(\frac{60}{240}\) = 0.25A
I = \(\frac{P}{V}\) = \(\frac{60}{40}\) = 1.5A
I = \(\frac{P}{V}\) = \(\frac{40}{12}\) = 3.3A
I = \(\frac{P}{V}\) = \(\frac{40}{5}\) = 8A
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